Fix a bug in clusters/halo.py; Add a comment to utils/io/_create_dir()

Signed-off-by: Aaron LI <aly@aaronly.me>

2 files changed, 5 insertions, 1 deletions

diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py
index 586c7e0..b4c6388 100644
--- a/fg21sim/extragalactic/clusters/halo.py
+++ b/fg21sim/extragalactic/clusters/halo.py
@@ -365,7 +365,7 @@ class RadioHalo:
             pixelarea = pixelsize ** 2  # [arcsec^2]
             if omega < pixelarea:
                 omega = pixelarea
-                logger.warning("Halo sky coverage (%.2f [arcsec^2])" % omega,
+                logger.warning("Halo sky coverage (%.2f [arcsec^2])" % omega +
                                " < pixel area (%.2f [arcsec^2])" % pixelarea)
 
         flux = self.calc_flux(emissivity)
diff --git a/fg21sim/utils/io.py b/fg21sim/utils/io.py
index 1d30b23..4f05e96 100644
--- a/fg21sim/utils/io.py
+++ b/fg21sim/utils/io.py
@@ -20,6 +20,10 @@ def _create_dir(filepath):
     """
     Check the existence of the target directory, and create it if necessary.
 
+    NOTE
+    ----
+    If the given ``filepath`` is simply the filename without any directory
+    path, then just returns.
     """
     dirname = os.path.dirname(filepath)
     # ``dirname == ""`` if ``filepath`` does not contain directory path